us patent 8,653,345, entitled "replaceable nut", issued 2014

8/16/2019 US Patent 8,653,345, entitled "Replaceable nut", issued 2014.

1/23

( 1 2 ) United

S t a t e s

Patent

US008653345B1

( 1 0 )

P a t e n t N 0 . :

US , 6 5 3 , 3 4 5 B 1

Rogers

4 5 )

D a t e

o f P a t en t : F e b . 1 8 , 2 0 1 4

( 5 4 )

REPLACEABLE NUT

( 5 6 )

R e f e r e n c e s C i t e d

7 6 )

I n v e n t o r :

Wayne R o g e r s , T i t u s v i l l e , FL ( U )

US‘ PATENT

DOCUMENTS

_ _ _ _ _

3,515,025 A 6/1970 Appleton

. . . . . . . . . . . . . . . . . .

. 84/314N

* )

N o t 1 c e : Subject t o

any

d 1 s c l a 1 m e r ,

the term of h 1 s *

_ _

p a t e n t

i s e x t e n d e d o r a d j u s t e d u n d e r 3 5 cued

by

e x a m l n e r

U - S ~ C ~ 1 5 4 1 ) )

b y 0 d a y s - P r i m a r y Examiner

*

i a n c h u n Qin

( 7 4 ) A t t o r n e y , A g e n t , o r Firm * r i a n S . S t e i n b e r g e r ;

L a W

( 2 1 ) A P P 1 ~ NOJ 1 3 / 5 4 8 , 5 7 4

O f ? c e s o f

B r i a n

S . S t e i n b e r g e r ,

PA.

( 2 2 ) F i l e d : J u l .

1 3 , 2 0 1 2

( 5 7 ) ABSTRACT

6 0 )

5 1 )

5 2 )

5 8 )

R e l a t e d

US.

p p l i c a t i o n Data

P r o v i s i o n a l a p p l i c a ti o n

N o . 6 1 / 5 0 7 , 3 9 5 ,

? l e d on u l .

1 3 , 2 0 1 1 .

I n t .

C l .

G10D / 0 6

U S .

C l .

USPC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 84/314N

F i e l d

o f

C l a s s i ? c a t i o n Search

USPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

84/314N

S e e

a p p l i c a ti o n ? l e f o r

c o m p l e t e

s e a r c h

h i s t o r y .

2 0 0 6 . 0 1 )

D e v i c e s ,

a p p a r a t u s ,

a n d

m e t h o d s

o f

u s i n g a

r e p l a c e a b l e

n u t

W i t h b u i l t o n r e t f o r

a s t r i n g e d i n s t r u m e n t s ,

s u c h

a s

f o r g u i t a r s

and

b a n j o s .

The

n o v e l combined

Z e r o g l i d e

n u t

W i t h f r e t can

be used

a s a

Z e r o

g l i d e

n u t system

t h a t

can be s u b s t i t u t ed f o r

t h e e x i s t i n g s t a n d a r d n u t s on s t r i n g e d i n s t r u m e n t s .

The o v e l

combined

Z e r o

g l i d e

n u t

W i t h f r e t

e l i m i n a t e s t h e

need f o r

? l i n g a n d a d j u s t i n g t h e s l o t s o n t h e n u t s , s i n c e s t r i n g s

d o

n o t

h a r s h l y

r u b

a g a i n s t

i n n e r

s i d e s

a n d d o

n o t

r u b

a g a i n s t t h e

bottom of

h e s l o t s i n t h e

n u t .

Compared o a c o n v e n t i o n a l

n u t ,

t h e Z e r o g l i d e i m p r o v e s t u n i n g s t a b i l i t y , p l a y a b i l i t y

W i t h o u t

s t r i n g buZZ

o n

t h e

f r e t , does

not Wear s l o t s

a s

occurs i n a

c o n v e n t i o n a l nut and s m o r e e a s i l y i n s t a l l e d than a conven

t i o n a l

n u t .

1 3

C l a i m s , 1 7 Drawing S h e e t s


2/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4 S h e e t

1

0 f

1 7

US

, 6 5 3 , 3 4 5

B1

F i g . 1

F i g . 2

0


3/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4 S h e e t 2 0 f

1 7

US

, 6 5 3 , 3 4 5

B1


4/23

US.

P a t e n t F e b .

1 8 , 2 0 1 4

S h e e t

3 0 f

1 7

US

, 6 5 3 , 3 4 5

B1

F i g . 5 ( P R I O R

A R T )


5/23


6/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4 S h e e t 5 0 f

1 7

US

, 6 5 3 , 3 4 5

B1

o n


7/23

US.

P a t e n t F e b .

1 8 , 2 0 1 4

S h e e t

6 0 f

1 7

US

, 6 5 3 , 3 4 5

B1

0 :

o w

3 m mm m

\u m ;

a t

a s

c m

3 %


8/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4 S h e e t

7

0 f

1 7

US

, 6 5 3 , 3 4 5

B1

5 0


9/23

US.

P a t e n t F e b .

1 8 , 2 0 1 4

S h e e t

8 0 f

1 7

US

, 6 5 3 , 3 4 5

B1

F i g . 2 8


10/23


11/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4

S h e e t 1 0

0 f

1 7

US

, 6 5 3 , 3 4 5

B1

F i g . 3 l

PRIOR ART) 7 0 7 0 r 7 0

fvo 7 0

7 0 f ‘ L110

F i g . 3 2

PRIOR

ART) 7 “ /‘- °

F i g . 3 3

(PRIO R ART)

2 0 0 “

4 °


12/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4

S h e e t

1 1 0 f

1 7

US

, 6 5 3 , 3 4 5

B1


13/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4

S h e e t 1 2

0 f

1 7

US

, 6 5 3 , 3 4 5

B1


14/23

US.

P a t e n t F e b .

1 8 , 2 0 1 4

S h e e t 1 3

0 f

1 7

US

, 6 5 3 , 3 4 5

B1

3 0 0


15/23


16/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4

S h e e t 1 5

0 f

1 7

US

, 6 5 3 , 3 4 5

B1

a » ?

e g a

s ~ \ \R E

c o m

\

| o m

T LT C

\

2o m a v

25 ,

o w a v

\ » ?o m m y

o 3m w ?i w ?S

w w i

8 m

\ x

_:

=

g 25 2 :

§ . \

& 5

8 m

\ N \ \

2o u r n2o v r c

3 . ?w ;


17/23

US.

P a t e n t F e b . 1 8 ,

2 0 1 4

S h e e t 1 6

0 f

1 7

US

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B1

c o m


18/23


19/23

US

8 , 6 5 3 , 3 4 5 B1

1

REPLACEABLE NUT

T h i s

i n v e n t i o n

c l a i m s

t h e

b e n e ? t o f p r i o r i t y t o

U s .

P r o v i

s i o n a l P a t e n t A p p l i c a t i o n S e r . N o . 6 1 / 5 0 7 , 3 9 5 ? l e d J u l .

1 3 ,

201 .

FIE L D

OF

INVENTION

T h i s i n v e n t i o n e l a t e s t o s t r i n g e d i n s t r u m e n t s ,

i n

p a r t i c u l a r

t o d e v i c e s , a p p a r a t u s ,

s y s t e m s ,

a n d m e t h o d s

o f u s i n g

a n d

i n s t a l l i n g

a

r e p l a c e a b l e Z e r o g l i d e

n u t

W i t h b u i l t on r e t f o r

s t r i n g e d i n s t r u m e n t s ,

s u c h a s

a

g u i t a r

a n d b a n j o .

BACKGROUNDAND PRIOR

ART

G u i t a r n e c k s u s u a l l y h a v e

a

p l u r a l i t y o f s p a c e d a p a r t

f r e t s

o n

t h e

g u i t a r neck

and a ?xed

g u i t a r n u t . The

n u t

h a s

a

p l u r a l i t y o f r o o v e s t o a l l o W f o r

s t r i n g s

to s i t

t h e r e i n . F r e t s a r e

t h e r a i s e d p o r t i o n s on t h e

n e c k

o f

s t r i n g e d

i n s t r u m e n t s t h a t

g e n e r a l l y

e x t e n d s a c r o s s t h e

f u l l

Width

of

h e n e c k .

Mo

t

o f t e n

t h e

f r e t s

a r e

m e t a l s t r i p s

i n s e r t e d i n t o t h e ? n g e r b o a r d s o n t h e

n e c k .

F r e t s a r e

g e n e r a l l y

used

t o

d i v i d e t h e

neck

i n t o

?xed

segments a t

i n t e r v a l s r e l a t e d to

a musical frameWork. On

i n s t r u m e n t s s uch

a s

g u i t a r , each

r e t

can e p r e s e n t s

one

semi

t o n e

Where one o c t a v e i s d i v i d e d i n t o tWelve s e m i t o n e s .

The

n u t

o f a

s t r i n g e d i n s t r u m e n t

i s a

s m a l l p i e c e

of a r d

m a t e r i a l Which

s u p p o r t s t h e s t r i n g s

a t t h e

end

c l o s e s t

t o

t h e

h e a d s t o c k . The n u t marks o n e end o f

t h e

s p e a k i n g

l e n g t h o f

e a c h open s t r i n g , s e t s t h e s p a c i n g o f t h e

s t r i n g s

a c r o s s t h e

n e c k , a n d u s u a l l y h o l d s t h e s t r i n g s

a t

t h e

p r o p e r

h e i g h t

f r o m

t h e

? n g e r b o a r d . A l o n g W i t h

t h e b r i d g e t h e

n u t

d e ? n e s

t h e

v i b r a t i n g

l e n g t h s s c a l e l e n g t h s )

o f t h e o p e n s t r i n g s . T h e n u t

c a n

be

made o f e b o n y ,

i v o r y ,

c oW b o n e , b r a s s , C o r i a n

o r

p l a s t i c ,

a n d

i s u s u a l l y n o t c h e d

o r

g r o o v e d f o r t h e s t r i n g s . The

g r o o v e s

a r e

d e s i g n e d t o l e a d

t h e

s t r i n g

from t h e

b r i d g e

t o t h e

h e a d s t o c k s o

s e p a r a t e t h e

s t r i n g s and to

p r o v i d e a

p r o p e r

b r e a k

a n g l e

f o r

c o r r e c t

s t r i n g

v i b r a t i o n .

Most

r i o r

a r t


s u c h

as

g u i t a r s h a v e

a

s i n g l e

n u t ,

a n d

t h e n h a v e a p l u r a l i t y

o f r e t s ,

t h e

? r s t

o f Which

i s s p a c e d

a p a r t f r o m

t h e n u t . The

s i n g l e

n u t c a n o n l y

b e

r e p l a c e d

W i t h

a n o t h e r

s i n g l e n u t .

To

make

a

p r o p e r

n u t

r e q u i r e s

t h a t

e a c h s t r i n g n o t c h b e c a r e f u l l y c u t

t o

t h e p r o p e r

d e p t h s o t h a t t h e

s t r i n g i s

n e i t h e r t o o h i g h , a f f e c t i n g o v e r a l l

s t r i n g h e i g h t and

i n t o n a t i o n

o f

f r e t t ed n o t e s ,

n o r

t o o

loW

Which c a u s e s a p l u c k e d o r p i c k e d s t r i n g

t o b u Z Z

a g a i n s t t h e

f r e t s .

S ome g u i t a r s

a n d

m a n d o l i n s h a v e n u t s

t h a t a r e j u s t s t r i n g

s p a c e r s , With deep n o t c h e s .

These

i n s t r u m e n t s use a Z e r o f r e t ,

Which

s

a

f r e t

at t h e

b e g i n n i n g of

h e s c a l e Where a normal

u t

Would

e ,

Which

s

h i g h e r

t h a n

t h e o t h e r f r e t s

t o

p r o v i d e t h e

c o r r e c t

s t r i n g

c l e a r a n c e . The

Z e r o f r e t

i s

o f t e n found o n

cheaper

i n s t r u m e n t s ,

a s i t ’ s

m u c h

e a s i e r

t o s e t up an i n s t r u

ment h i s W a y . With a Z e r o f r e t , t h e f r e t merely needs t o be t h e

r i g h t h e i g h t . H o W e v e r ,

a

Z e r o f r e t a l s o makes

t h e

sound f

t h e

open s t r i n g v e r y s i m i l a r t o t h e f r e t t e d n o t e , Where t h e n u t

i t s e l f ,

b e i n g

made o f

a d i f f e r e n t

m a t e r i a l , h a s

a d i f f e r e n t

timbre i f t i s used

i n s t e a d

of

a

Z e r o f r e t . Zero f r e t s a r e ?xed

i n t o

t h e

neck and a r e

n o t

e a s i l y r e m o v a b l e .

T h e

p r i o r

a r t h a s

p r o b l e m s

W i t h t u n i n g a n d

s o u n d q u a l i t y

When u s t u s i n g

n u t s s i n c e t h e s t r i n g s may h a v e f r i c t i o n b y

r e s t i n g o n

h e i n n e r s i d e s

and bottom o f

t h e n u t

s l o t s .

T h e r e

i s

no e a s y Way o f t u n i n g t h e s l o t s on t h e n u t s

W he n

used by

t h e m s e l v e s .

None of

t h e p r i o r

a r t

a l l o W s f o r a combined n u t W i t h

f r e t

t h a t can

be

used o

r e p l a c e

a

s i n g l e

n u t

on

t h e s t r i n g e d i n s t r u

ment.

25

30

35

40

45

50

55

60

6 5

2

T h u s , t h e

n e e d

e x i s t s

f o r s o l u t i o n s

t o t h e

a b o v e

p r o b l e m s

W i t h t h e

p r i o r

a r t .

SUMMARY OF THE

INVENTION

A

r i m a r y o b j e c t i v e o f t h e

p r e s e n t i n v e n t i o n

i s t o

p r o v i d e

d e v i c e s , a p p a r a t u s ,

s y s t e m s

a n d m e t h o d s

o f

s i n g

a

c o m b i n e d

n u t With r e t

t h a t can be used a s a r e p l a c e a b l e n u t f o r

s t r i n g e d

i n s t r u m e n t s

s u c h as g u i t a r s a n d b a n j o s .

A

e c o n d a r y

o b j e c t i v e o f h e p r e s e n t i n v e n t i o n

s t o p r o v i d e

d e v i c e s , a p p a r a t u s , s y s t e m s a n d m e t h o d s o f s i n g a c o m b i n e d

n u t

W i t h f r e t on

s t r i n g e d i n s t r u m e n t s Where t h e r e

i s

no

a d j u s t

ment n e c e s s a r y f o r

t h e n u t

s l o t s .

A

h i r d

o b j e c t i v e

o f

t h e p r e s e n t i n v e n t i o n

i s t o p r o v i d e


s y s t e m s

a n d m e t h o d s o f s i n g a c o m b i n e d

n u t W i t h

f r e t

o n

s t r i n g e d i n s t r u m e n t s , s o

t h a t

When s t r i n g s

v i b r a t e i n s t e a d o f coming o f f t h e

n u t ,

i t W i l l v i b r a t e o f f t h e

m e t a l f r e t i n c r e a s i n g s o u n d

q u a l i t y .

A

o u r t h o b j e c t i v e o f t h e p r e s e n t i n v e n t i o n i s t o p r o v i d e

d e v i c e s ,

a p p a r a t u s ,

s y s t e m s


n u t W i t h f r e t

o n

s t r i n g e d i n s t r u m e n t s , s o t h a t

f o r

t u n i n g , t h e r e

i s

l e s s f r i c t i o n

o n

t h e

i n n e r

s i d e

of

h e

n u t

s l o t s .

A f t h

o b j e c t i v e

o f

t h e

p r e s e n t i n v e n t i o n i s t o p r o v i d e

d e v i c e s , a p p a r a t u s , s y s t e m s


n u t W i t h r e t o n s t r i n g e d i n s t r u m e n t s ,

s o

t h a t t h e

s l o t s

a r e

d e e p

enough s o t h a t t h e

b o t t o m

o f t h e s l o t s

i s s p a c e d

u n d e r t h e

s t i n g s , Where t h e b o t t o m o f t h e s l o t s

d o e s n o t

r u b a g a i n s t t h e

s t r i n g s .

A i x t h o b j e c t i v e o f

t h e p r e s e n t i n v e n t i o n

i s t o p r o v i d e


s y s t e m s


n u t W i t h f r e t on

s t r i n g e d

i n s t r u m e n t s , Which r e d u c e

n u t

f r i c

t i o n b y u p

t o

93 i n c r e a s i n g t u n i n g s t a b i l i t y , p l a y a b i l i t y a n d

open t r i n g t o n e .

A e v e n t h o b j e c t i v e

o f

t h e p r e s e n t

i n v e n t i o n i s t o

p r o v i d e

d e v i c e s ,

a p p a r a t u s ,

s y s t e m s


n u t W i t h

f r e t o n

s t r i n g e d

i n s t r u m e n t s , Which

can be i n s t a l l e d

i n

m i n u t e s W i t h

no

permanent

a l t e r a t i o n

to

t h e s t r i n g e d

i n s t r u

ment.

A e r o

g l i d e

n u t s y s t e m f o r


c a n

i n c l u d e t h e combination of Z e r o g l i d e n u t having a

f r o n t and

a

b a c k ,

and a f r e t i n s t a l l e d o n h e f r o n t of h e n u t , Wherein h e

combined

n u t With i n s t a l l e d

n u t ,

can

be used t o r e p l a c e

a

s t a n d a r d n u t

o n

a s t r i n g e d i n s t r u m e n t .

The

s t r i n g e d

i n s t r u m e n t

c a n

b e

a g u i t a r .

The

s t r i n g e d

i n s t r u m e n t can

be

a b a n j o .

T h e Z e r o g l i d e

n u t

can

i n c l u d e

a g e n e r a l l y

convex curved

upper

r o n t e d g e . The Z e r o g l i d e

n u t

can i n c l u d e

a

p l u r a l i t y of

s p a c e d

a p a r t

s t r i n g s l o t s a l o n g

a

t o p o f

t h e

n u t .

T h e

Zero g l i d e

nut

can include

a

i n d e n t a t i o n i n an upper

f r o n t e d g e o f t h e n u t , W h e r e i n t h e

f r e t

i s i n s t a l le d

i n t o

t h e

i n d e n t a t i o n

i n

t h e

u p p e r

f r o n t e d g e

o f h e n u t . The

n d e n t a t i o n

can

i n c l u d e

a tWo s t e p c u t - o u t

i n

t h e upper f r o n t edge of h e

n u t .

T h e Z e r o g l i d e n u t

system can

i n c l u d e an

a d h e s i v e

f o r

p e r m a n e n t l y m o u n t i n g t h e f r e t

t o

t h e n u t .

A

o v e l

method of

e p l a c i n g

a n u t

o n

a s t r i n g e d i n s t r u m e n t

With

a

Z e r o g l i d e n u t ,

can

i n c l u d e

t h e s t e p s of

p r o v i d i n g

a

s t r i n g e d i n s t r u m e n t

W i t h

a neck

h a v i n g

a s t a n d a r d i n s t a l l e d

n u t ,

a n d

a

l u r a l i t y o f r e t s , e a c h o f

W h i c h

s s p a c e d a p a r t

f r o m

t h e

n u t ,

p r o v i d i n g a

Z e r o

g l i d e n u t

W i t h an

i n s t a l l e d

f r e t , and

r e p l a c i n g t h e s t a n d a r d i n s t a l l e d n u t o n h e s t r i n g e d i n s t r u m e n t

W i t h

t h e Z e r o g l i d e

n u t

W i t h i n s t a l l e d f r e t .

T h e

Z e r o

g l i d e n u t With i n s t a l l e d f r e t

can

i n c l u d e a gener

a l l y

convex

c u r v e d upper

r o n t edge

o n

h e

n u t .

The e r o

g l i d e

n u t

W i t h

i n s t a l l e d f r e t c a n i n c l u d e a p l u r a l i t y o f s p a c e d a p a r t

s t r i n g

s l o t s a l o n g a t o p o f t h e

n u t .


20/23

US

8 , 6 5 3 , 3 4 5 B1

3

The Z e r o g l i d e n u t With i n s t a l l e d f r e t

can

i n c l u d e a inden

t a t i o n

i n a n u p p e r back e d g e o f t h e n u t , W h e r e i n t h e

f r e t

i s

i n s t a l l e d

i n t o t h e i n d e n t a t i o n i n t h e

u p p e r

back d g e o f h e n u t .

T h e i n d e n t a t i o n

can

i n c l u d e a tWo s t e p c u t - o u t i n t h e upper

b a c k e d g e o f t h e

n u t .

The

Z e r o

g l i d e

n u t

With

i n s t a l l e d

f r e t can i n c l u d e an adhe

s i v e f o r p e r m a n e n t l y m o u n t i n g

t h e f r e t t o

t h e

n u t .

The

method

of c l a i m 9 , can i n c l u d e

p r o v i d i n g a

g u i t a r a s

t h e s t r i n g e d i n s t r u m e n t .

The method o f c l a i m 9 , c a n i n c l u d e

p r o v i d i n g a b a n j o a s t h e s t r i n g e d i n s t r u m e n t .

F u r t h e r o b j e c t s a n d a d v a n t a g e s o f t h i s i n v e n t i o n W i l l b e

a p p a r e n t

f r o m

t h e f o l l o W i n g

d e t a i l e d

d e s c r i p t i o n o f t h e p r e s

e n t l y

p r e f e r r e d embodiments Which

a r e

i l l u s t r a t e d s c h e m a t i

c a l l y

i n t h e a c c o m p a n y i n g

d r a W i n g s .

B RIE F

DESCRIPTION

OF THE

FIGURES

F I G . 1

i s a

t o p p e r s p e c t i v e vieW of

a

g u i t a r W i t h

t h e

Z e r o

g l i d e n u t

i n s t a l l e d .

F I G . 2 i s a n e n l a r g e d vieW o f t h e

Z e r o g l i d e n u t g u i t a r

i n s t a l l a t i o n

o f

F I G .

1 .

F I G .

3

i s an exploded vieW of

t h e

Z e r o g l i d e n u t c omp o

n e n t s

of FIG.

2 .

F I G . 4 i s a n o t h e r e x p l o d e d vieW o f

t h e

Z e r o

g l i d e

compo

n e n t s

of

FIG.

2 .

F I G . 5 i s

a p r i o r a r t

vieW

of

s t a n d a r d g u i t a r n u t

i n s t a l l a

t i o n .

F I G .

6

i s an e x p l o d e d vieW o f

t h e

s t a n d a r d g u i t a r n u t o f

F I G .

5 .

F I G . 7

s a

r e a r p e r s p e c t i v e vieW o f

t h e

s t a n d a r d g u i t a r

n u t

of

I G . 5 .

F I G . 8 i s a

f r o n t

p e r s p e c t i v e v i e W o f h e

s t a n d a r d

g u i t a r n u t

of

I G . 5 .

FIG. 9 i s a r e a r

vieW

of h e s t a n d a r d

g u i t a r

n u t of FIG. 5 .

F I G .

1 0

i s

a

t o p vieW

o f t h e s t a n d a r d

g u i t a r

n u t o f

F I G .

5 .

F I G . 1 1 i s a bottom vieW of h e

s t a n d a r d

g u i t a r

n u t

o f F I G .

5 .

F I G . 1 2

i s

a

c r o s s - s e c t i o n a l

vieW

o f

t h e

n u t of I G . 9 a l o n g

a r r o W

1 2 X .

F I G . 1 3

i s a f r o n t

vieW of

h e s t a n d a r d g u i t a r n u t

of I G . 5 .

F I G .

1 4

i s a

r e a r

p e r s p e c t i v e o f t h e n o v e l Z e r o g l i d e g u i t a r

n u t u s e d W i t h

t h e

g u i t a r o f F I G S . 1 - 4 .

F I G . 1 5 i s a f r o n t

p e r s p e c t i v e

o f h e

Z e r o g l i d e g u i t a r n u t

o f

F I G .

1 4 .

FIG.

16 s a r e a r vieW of h e Z e r o g l i d e g u i t a r n u t

of FIG.

1 4 .

F I G . 17 s

a

t o p vieW o f t h e

Z e r o g l i d e

g u i t a r

n u t

ofFIG.

1 4 .

F I G . 18 s

a

bottom vieW of h e

Z e r o

g l i d e g u i t a r

n u t

of I G .

1 4 .

FIG.

19 i s a


vieW of t h e Z e r o g l i d e n u t of

F I G .

16

a l o n g

arroW 19X.

F I G . 20

s

a f r o n t

vieW of

h e Z e r o

g l i d e g u i t a r

n u t o f F I G .

1 4 .

F I G . 2 1 i s a f r o n t p e r s p e c t i v e vieW o f t h e n o v e l

Z e r o

g l i d e

f r e t

u s e d

W i t h

t h e

g u i t a r

o f F I G S . 1 - 4 .

F I G . 22 s a t o p vieW of h e n o v e l Z e r o g l i d e f r e t of I G . 2 1 .

F I G . 23 i s a f r o n t

vieW

ofthe Z e r o g l i d e f r e t o f F I G . 2 1 .

F I G .

24

i s a c r o s s - s e c t i o n a l vieW of h e

Z e r o

g l i d e f r e t of

F I G . 22

a l o n g

arroW 24X.

F I G . 2 5 i s a n e n l a r g e d p e r s p e c t i v e vieW o f

t h e

Z e r o

g l i d e

n u t

and r e t

i n s t a l l e d .

F I G . 2 6 .

i s

a s i d e

vieW of

h e Z e r o g l i d e g u i t a r n u t

and

r e t

i n s t a l l a t i o n o f F I G . 2 5 .

F I G .

27 s a g u i t a r head end

vieW

f

h e

Z e r o g l i d e g u i t a r n u t

and r e t

i n s t a l l a t i o n o f

F I G . 26

a l o n g

a r r o W s 27X/28 X

s h o W

i n g s t r i n g t o Z e r o

g l i d e f r e t c o n t a c t .

F I G .

2 8

i s

a n

e n l a r g e d

vieW

o f F I G .

27

s h o W i n g

s t r i n g t o

Z e r o g l i d e

f r e t c o n t a c t

20

25

30

35

40

45

50

55

60

6 5

4

F I G . 29 i s a n e n l a r g e d p r i o r

a r t

p e r s p e c t i v e vieW o f a

s t a n d a r d

g u i t a r

n u t

i n s t a l l a t i o n .

F I G . 30

s a

s i d e vieW of

h e s t a n d a r d

g u i t a r

n u t

i n s t a l l a t i o n

of I G . 2 9 .

F I G . 3 1 i s a g u i t a r head end vieW o f t h e s t a n d a r d g u i t a r n u t

i n s t a l l a t i o n o f F I G . 30

a l o n g

a r r o W s 31X/32X/33X.

F I G . 3 2

i s a n e n l a r g e d

v i e W

o f F I G . 3 1

s h o W i n g

s t r i n g

r u b b i n g i n t o a

n u t

s l o t .

F I G .

3 3 i s a n o t h e r

e n l a r g e d

v i e W

o f

F I G .

3 1

s h o W i n g s t r i n g

movement W h i l e p l a y i n g

and t u n i n g

h a s Worn t h e

n u t

s l o t

Which

W i l l

r e s u l t i n t h e s t r i n g b i n d i n g i n t h e n u t .

F I G . 34

s

a t o p p e r s p e c t i v e vieW o f a

b a n j o

W i t h t h e

n o v e l

Z e r o g l i d e

i n s t a l l e d .

T h i s i n s t a l l a t i o n

i n c l u d e s an

o p t i o n f e a

t u r e Which h i d e s t h e

e n d s o f

t h e f r e t

t a n g .

F I G . 35 i s an e n l a r g e d vieW

o f

t h e Z e r o g l i d e n u t b a n j o


F I G .

36

i s an

exploded

vieW o f t h e Z e r o g l i d e n u t and r e t

a n d

b a n j o

o f F I G . 3 5 .

F I G . 37 s a n o t h e r e x p l o d e d vieW

o f

Z e r o

g l i d e n u t and r e t

a n d b a n j o o f F I G . 3 6 .

F I G . 3 8 i s a t o p p e r s p e c t i v e p r i o r a r t vieW o f a

b a n j o

W i t h

s t a n d a r d n u t i n s t a l l e d .

F I G . 3 9

i s

an

e x p l o d e d

vieW

o f

t h e b a n j o

W i t h

s t a n d a r d n u t

of I G . 3 8 .

F I G . 40 s

a

s i d e vieW of

h e b a n j o

i n s t a l l e d Z e r o g l i d e

n u t

and r e t o f F I G .

3 5 .

F I G .

4 1 i s

an

e n l a r g e d

s i d e

vieW o f t h e i n s t a l l e d Z e r o g l i d e

n u t

and

r e t

of FIG.

4 0 .

The hidden t a n g can be s e e n .

F I G .

42 i s a p r i o r a r t s i d e vieW o f t h e s t a n d a r d b a n j o n u t


FIG.

43 i s a

r e a r

p e r s p e c t i v e vieW of

s t a n d a r d banjo

n u t

from F I G . 3 8 .

F I G . 44

s

a f r o n t p e r s p e c t i v e vieW

f

h e

s t a n d a r d b a n j o n u t

of I G . 4 3 .

FIG. 45 s a

r e a r

vieW ofthe s t a n d a r d b a n j o n u t ofFIG.

4 3 .

F I G . 46 s

a


s t a n d a r d

b a n j o

n u t

o f F I G .

4 3 .

F I G .

47

s

a

bottom vieW of

h e s t a n d a r d

b a n j o

n u t

of I G .

4 3 .

F I G . 48 s

a

s i d e vieW o f t h e s t a n d a r d b a n j o

n u t

ofFIG. 4 3 .

F I G . 49

s a f r o n t vieW

of

h e s t a n d a rd b a n j o n u t

of

I G .

4 3 .

F I G . 50 i s a

r e a r

p e r s p e c t i v e vieW

o f

t h e

Z e r o

g l i d e b a n j o

n u t of FIG.

3 5 .

F I G . 5 1 i s

a f r o n t p e r s p e c t i v e

vieW o f

t h e Z e r o

g l i d e b a n j o

n u t of FIG.

5 0 .

FIG. 52 s a r e a r vieW

f t h e

Z e r o g l i d e b a n j o

n u t

ofFIG. 5 0 .

F I G .

5 3

i s

a


Z e r o

g l i d e b a n j o

n u t

ofFIG.

5 0 .

F I G . 54

s a

bottom vieW o f

t h e

Z e r o g l i d e b a n j o

n u t

o f F I G .

5 0 .

FIG. 55 i s a


vieW

of t h e

Z e r o

g l i d e

n u t

of

F I G . 52 a l o n g

arroW

5 4 X

F I G .

56 s a f r o n t

vieW o f t h e

Z e r o

g l i d e

b a n j o n u t

of

I G .

5 0 .

F I G .

57

s

a f r o n t p e r s p e c t i v e

vieW o f

t h e Z e r o

g l i d e b a n j o

f r e t

of

I G . 3 5 .

F I G . 5 8 i s a

t o p vieW

o f t h e

Z e r o g l i d e

b a n j o f r e t o f F I G .

5 7 .

F I G . 59

s

a f r o n t vieW o f t h e Z e r o

g l i d e

b a n j o f r e t o f F I G .

57

FIG. 6 0

i s

a c r o s s - s e c t i o n a l vieW of h e Z e r o g l i d e f r e t of

F I G . 58 a l o n g

arroW 60X.

DESCRIPTION

OF THE

PREFERRED

EMBODIMENTS

B e f o r e

e x p l a i n i n g

t h e

d i s c l o s e d

e m b o d i m e n t s o f

t h e

p r e s e n t i n v e n t i o n i n

d e t a i l

i t i s t o b e u n d e r s to o d t h a t

t h e

i n v e n t i o n

s n o t

l i m i t e d i n

i t s a p p l i c a t i o n s t o t h e d e t a i l s o f

t h e

p a r t i c u l a r a r r a n g e m e n t s shoWn s i n c e t h e

i n v e n t i o n

s

c a p a b l e


21/23


22/23


23/23

us patent 8,653,345, entitled "replaceable nut", issued 2014

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